Heney v



UNITED STATES PATENT OFFIC HENRY V. P. DRAPER, OF HANNIBAL, ASSIGNOR OF ONE-SIXTEENTH OF HIS RIGHT TO ROBERT ELLIOTT WILLIAMS AND EDWARD BERNHARD WIOKENHAUSER, OF ST. LOUIS, MISSOURI.

TREATMENT OF PETROLEUM LUBRlCATlNG-OIL AND LARD-OIL.

SPECIFICATION forming part of Letters Patent No. 228,181, dated June 1, 1880.

Application filed October 20,1879.

To all "whom it may concern.-

Be it known that I, HENRY V. P. DRAPER, of Hannibal, Missouri, have made a new and useful Improvement in the Treatment of Petroleum Lubricating-Oil and Lard-Oil to lower the degree of temperature at which they congeal, of which the followin g is a full, clear, and eXact description.

It is a well-known fact that many oils of commerce, such as lard-oil and reduced petroleuin lubricating-oils, solidify at a temperature of about 40 Fahrenheit. This fact occasions trouble in handling, pouring, and using the oils whenever the prevailing temperature is not above that named.

I have ascertained that combining chloroform with petroleum lubricating-oil or lard-oil causes these oils to remain liquid at a lower temperature than that at which they previously solidified, and in practice the oils can be kept fluid by the present improvement at a temperature as low as zero Fahrenheit.

In combining the chloroform take, for instance, of chloroform three (3) pounds and of lard-oil or petroleum lubricating-oil twenty- 25 five (25) gallons, mix the two ingredients thoroughly together-the more thoroughly the better the result.

I have also learned that the larger the quantity of chloroform combined with the oil up to 0 the point of saturation the lower the temper ature at which the oil solidifies.

I claim-- The herein-described mode of lowering [he degree of temperature at which lard and pe- 35 troleum lubricating-oils solidify, which consists in combining chloroform therewith substantially as described.

H. V. P. DRAPER.

Witnesses:

CHAS. D. MoonY, SAM'L. S. BOYD. 

